CBS is singing the blues over “Viva Laughlin,” which has been officially canceled after just two episodes.Emmy winner “The Amazing Race” will take “Laughlin’s” place in the Sunday 8 p.m. slot - where the reality show resided last year - effective Nov. 4. A repeat “CSI” will run in the time period next week.

The Nov. 4 date is not just as close as possible to the cancellation of Viva Laughlin. It is also the beginning of Sweeps Month for CBS and all the networks. Any later start could have pushed CBS into a split of sweeps for AR12 between November and February, assuming that the season will be 13 weeks or less.